First Alert SA521CN ONELINK Hardwire Wireless Smoke Alarm with Battery Backup

First Alert SA521CN ONELINK Hardwire Wireless Smoke Alarm with Battery Backup Review

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First Alert SA521CN ONELINK Hardwire Wireless Smoke Alarm with Battery Backup Feature

• Hardwire, interconnected wireless smoke alarm with battery backup
• Uses photoelectric sensing technology which is environmentally friendlier
• Low battery warning; simple to use silence/test button; pullout battery drawer
• Add additional battery operated First Alert ONELINK alarms to expand without wires
• 120-volt with 2 AA battery backup

In the event of a fire every second counts. If a fire were to begin in your basement and the alarm there sounded, you may not hear it right away if you're sound asleep two floors up. With traditional battery-operated alarms, you lose valuable time waiting for the smoke to rise to another alarm, on another level, before the alarm on your floor sounds. But with First Alert ONELINK alarms, if one detects danger, they all sound. This can alert you sooner, and it increases your chances of getting out safely.

Until now, alarms that could signal each other were only available in homes with hardwired alarms requiring installation from an electrician. But First Alert ONELINK alarms communicate without wires.

The First Alert ONELINK SA501CN alarm uses photoelectric sensing technology which is environmentally friendlier and which reduces nuisance alarms, making it ideal for cooking areas. It is also great for sensing slow smoldering fires quickly. The alarm includes a low battery warning and a super bright escape light. You can easily expand an existing interconnected 120-volt AC system by replacing one alarm in the series with this alarm. The test/silence button both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality. The AA batteries are easy to install in the convenient pullout battery drawer. Two AA batteries included.--Bree Norlander

What's in the Box
One smoke alarm, two AA batteries, and user's manual

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Customer Review

Jun 17, 2011 23:17:04